LP3943 Datasheet, PDF (4/21 Pages) National Semiconductor (TI) – RGB/White/Blue 16-LED Fun Light Driver

LP3943
SNVS256A – MAY 2004 – REVISED MAY 2004
Architectural Block Diagram
www.ti.com
SCL
SDA
VDD
RST
A AA
2 10
I²C
Filters
I²C Bus
Control
Power-On
Reset
Oscillator
Prescalar
0
Register
Prescalar
1
Register
Input
Register
Bit0 of Input Reg
1
LED Select
Register
Bit1
0
Bit0
o
Sf elec
t
Register
LS0
1
PWM 0
Register
PWM 1
Register
LED
0
COPIE
S
Programming Example (See end of
for complete datasheet
example)
Bit 7 of Input Register2
Bit 6 of Select Register LS3
Bit 7 of Select Register LS3
0
1
PWM0 Register
PWM1 Register
LED1
5
Figure 2. For Explanation of LP3943 Operation, Please Refer to “Theory of Operation” in Application
Notes.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
4
Submit Documentation Feedback
Product Folder Links: LP3943
Copyright © 2004, Texas Instruments Incorporated